When two sound sources of the same amplitude but of slightly different frequencies $v_1$ and $v_2$ are sounded simultaneously,the sound one hears has a frequency equal to
- A$|v_1 - v_2|$
- B$\frac{v_1 + v_2}{2}$
- C$\sqrt{v_1 v_2}$
- D$v_1 + v_2$
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Similar Questions
Identify the order in which the spin-only magnetic moment (in $BM$) increases for the following four ions:
$I. Fe^{2+}$
$II. Ti^{2+}$
$III. Cu^{2+}$
$IV. V^{2+}$
$I. Fe^{2+}$
$II. Ti^{2+}$
$III. Cu^{2+}$
$IV. V^{2+}$
Which option is correct to match section $A$ with section $B$?
Section $A$ Section $B$ $(i)$ Nitrosomonas $(a)$ $\text{Nitrite} \rightarrow \text{Nitrate}$ $(ii)$ Agrobacterium $(b)$ $\text{Nitrogen fixing bacteria}$ $(iii)$ Rhizobium $(c)$ $\text{NO}_3^- \rightarrow \text{N}_2$ $(iv)$ Nitrobacter $(d)$ $\text{Ammonia} \rightarrow \text{Nitrite}$ $(e)$ $\text{Denitrifying bacteria}$
| Section $A$ | Section $B$ |
| $(i)$ Nitrosomonas | $(a)$ $\text{Nitrite} \rightarrow \text{Nitrate}$ |
| $(ii)$ Agrobacterium | $(b)$ $\text{Nitrogen fixing bacteria}$ |
| $(iii)$ Rhizobium | $(c)$ $\text{NO}_3^- \rightarrow \text{N}_2$ |
| $(iv)$ Nitrobacter | $(d)$ $\text{Ammonia} \rightarrow \text{Nitrite}$ |
| $(e)$ $\text{Denitrifying bacteria}$ |
The famous botanical garden '$Kew$' is located in
If $a_k$ is the coefficient of $x^k$ in the expansion of $(1+x+x^2)^n$ for $k=0, 1, 2, \ldots, 2n$,then $a_1+2a_2+3a_3+\ldots+2na_{2n}$ is equal to
$A$ value of $n$ such that $\left(\frac{\sqrt{3}}{2}+\frac{i}{2}\right)^n=1$ is
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